214389386 has 4 divisors (see below), whose sum is σ = 321584082. Its totient is φ = 107194692.

The previous prime is 214389377. The next prime is 214389389. The reversal of 214389386 is 683983412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 202521361 + 11868025 = 14231^2 + 3445^2 .

It is a super-3 number, since 3×214389386³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (214389389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53597345 + ... + 53597348.

Almost surely, 2^214389386 is an apocalyptic number.

214389386 is a deficient number, since it is larger than the sum of its proper divisors (107194696).

214389386 is a wasteful number, since it uses less digits than its factorization.

214389386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107194695.

The product of its digits is 248832, while the sum is 44.

The square root of 214389386 is about 14642.0417292125. The cubic root of 214389386 is about 598.5049686368.

The spelling of 214389386 in words is "two hundred fourteen million, three hundred eighty-nine thousand, three hundred eighty-six".